cuda binary kernel for this graphics card compute capability (6.1) not found
I'll just quote  Developer Thomas Dinges' (dingto) post

In order to support Pascal cards, we need to build kernels with the CUDA Toolkit 8. There is only a RC of the CUDA Toolkit 8 available yet, and so far only for registered developers. https://developer.nvidia.com/cuda-toolkit
As soon as the final release is here we will build Blender with sm_61 kernels.